James clayton



(No Model.)

J. CLAYTON.

REGULATOR POR PUMPS 0R GOMPRESSORS.

No. 351,043. Patented Oct. 19, 1886.

rrregn.

JAMES CLAYTON, OF BROOKLYN, -NEV YORK.

REGULATOR FOR PUMPS OR COMPRESSORS.

SECFCATON forming part o Letters Patent No. 351,043, dated October 19, 1886.

Application filed May 2G, 1886. Serial No. $103,290. (No model.)

To all whom it may concern:

Be it known that l, Jarras CLAYTON, of the city of Brooklyn, in the county of Kings and State ot' New York, have invented a new and useful Improvement in Regulators or Governors for Fluid Pumps or Compressors, of which the following is a specification.

My invention is applicable to pumps or compressors et' various kinds, by the operation of which a supply of iluid is maintained under a predetermined and desired pressure within a reservoir, such fluid to be employed for oper'- ating rock-drills and other machines.

The object of my invention is to provide a governor or regulator, which, when the pressure ofiiuid exceeds that desired,will open an outlet from the delivery-pipe, whereby fluid under pressure .is delivered from the pump or compressor, and will enable the pump or compressor to deliver fluid directly to the atmospherc and relieve it of the resistance offered by the tluid which is under pressure in the delivery-pipe and receiver until such time as the pressure in the receiver shall fall below the desired degree. My invention is, however, more particularlyV intended for use in connection with a deliverypipe through which air under pressure is delivered by anair-co1npresser to a compressed air receiver or reservoir.

The invention consists, essentially, in the combination, with a pipe for the delivery of iluid under pressure from a pump or compresser, and an outlet therefrom provided with a puppet-valve held to its seat by duid-pressure, the said pipe being provided with a checkvalve beyond said outlet, ot' a weight, also holding the outlet-valve to its scat, and a niotor to be operated on by the compressed duid delivered through said pipe and acting upon the weight in a direction to raise it and open said outlet-valve. In such a combination the weight and the pressure of iluid both act to hold the outlet-valve to its seat, and the motor acts in the reverse direction to raise the weight and open the valve. As soon as the outlet-valve is raised very slightly from its seat by the action of the motor, it is at ence relieved ot' the pressure which holds it to its seat, and theweight is instantly raisedand the outlet-valve thrown wide open to afford a free opening to the atmosphere, the chcck-valvein the delivery-pipe closing to prevent the escape ot' compressed tluid from the receiver with which said pipe is connected.

The invention also consists in other combinations of parts hereinafter described, and pointed out in the claims.

The accompanying drawing represents a sectional clevatiou ol'an apparatus embodying my invention.

A designates a deliverypipe, which may surmount the discharge-chest of an air-compressor, and is shown as provided at thelower end with a flange, A', whereby it may be secured to the compressor. rlhis pipe A is for the delivery of compressed air from the compressor, and leads usually to an air tank or receiver wherein airis contained under pressure forvsupplying rockdrills or other niachines. The pipe A has extending from it an outlet-pipe, B, which is open to the atmos phere and immediately above the entrance to the pipe B, the pipcAhas init a check-valve, O,which will open to permit air to pass in the direction ot' the arrows, and will close automatically and prevent the return of any air from the air tank or receiver.

In the outlet-pipe B, leading to the atmosph ere., is'a valve-casing, B', containing a puppetvalve, b, which moves upwardin opening, and is held to its scat by the air-pressure upon it. The stem b of this valve is prolonged upward, and is, as here shown, connected with alever, D, which is provided with an adjustable weight, D', by which the valve I) is loaded. As here represented, the lever D is i'ulcrumed at d to a collar or clamp, Df, applied to the pipe A, and said lever' is guided in Aa post or pipe, D?, which may extend upward l'rom a suitable iitting in the air-outlet pipe B. It will be understood that the weight D and the pressure oi' air upon the valve b both tend to hold the valve to its seat; and in order to exert a force upon the lever D in an upward direction or in a directionopposite to that in wh ich the weight acts, I employ a motor, which is acted upon by compressed air taken from the pipe A at a point beyond the check-valve C, or, it' desired, from the air tank or receiver to which the airpipe A leads. The motor here represented consists of a cylinder, E, which may be sup- IOO ported by a collar, E', tting the outlet-pipe B, and within which is fitted a plunger or piston, F, provided with suitable packing and connected by a rod, F, with the lever D.

G designates a pipe leading from the air pipe A to the motor-cylinder E, below the piston or plunger F7 and in which is provided a stopvalve, h, for controlling thc passage through said pipe. A pressure-gage, H, may be connected with the pipe A below the check-valve for indicating the pressure of air delivered from the compressor.`

In the ordinary operation of the compressor' the weight D4 is adjusted so that the weight upon the lever D and the pressure oi' air upon the valve b will be balanced by the upward e pressure upon the motor-piston F when the air in the air tank or receiver and deliverypipe A is of the maximum pressure desired. For example, if it is desired to maintain a pressure of seventy-five pounds per square inch, then the weight D is adjusted so that the downward pressure of the weight and air acting upon the valve b will be just balanced by the upward pressure of seventy-five pounds per square inch acting upon the motor-piston So long as this maximum pressure is not exceeded the valve b will remain closed, and air will be delivered uninterruptedly through the pipe A by the compressor. If, however, the maximum pressure of seventy-five pounds per square inch be exceeded, then the upward pressure on the motor-piston F will act to raisev the valve b very slightly from its seat, and as soon as this is done the pressure of airwill no longer hold the valve b to its seat, and the excess of power in the motor will instantly raise l the lever D to its full height and fully open the valve I). The check-valve C will be instantly closed by the pressure above it, and

. thereafter the air delivered' from the compressor through the pipe A will pass through the outlet-pipe B and the valve Z1 directly to the atmosphere, andthecompressor will be relieved of the labor of delivering` air againstthe maximuml pressure which is in the air tank or receiver. As soon as the pressure of air in the tank or receiver and air-pipe A falls a little* below seventy-ve pounds (say to seventy-one or seventy-two pounds) the weight will overcome the upward force exerted on the motorpiston F and will return the valve Z) to its seat. The reduction in pressure below the point at which the apparatus is set, and which is necessary to return the valve I) to its seat, will, of course, vary according to the size oi the valve b relatively to the motor-piston F.

From the above description it will be understood that when the `valve b is raised and the check-valve C closes the air-compressor willy The pipe B may be continued to any desired point, and through a drain-pipe, l, may escape any oil or water which may pass over from the compressor with the air.

Vhat I claim as my inventioinand desire to secure by Letters Patent, isM

l. The combination, with a pipe for the delivery of iluidundcr pressure from a pump or compressor, and an outlet therefrom provided with a puppet-valve held to its seat by iiuidpressure, the said pipe being provided with a check-valve beyond said outlet, of a weight also holding the outlet-valve to its seat,and a motor to be operated on by the compressed iiuid delivered through said pipe and acting upon the weight in a direction to raise it and open said outlet-valve,substantially as herein described.

2. The combination, witha pipe for the delivery of iiuid under pressure from a pump or compressor,andwhiehisprovidedwithaeheckvalve, of an outlet below or inward of the checkvalve, provided with a downwardlyclosing puppet-valve held to its seat by huid-pressure, a weighted lever loading the valve, and a motor supplied with duid uuderpressure from a point beyond or above the check-valve,and acting to lii't said lever and open the outlet-valve, subl stantiall y as herein described.

3. The combination, with the delivery-pipe A, provided with a check-valve, C, of the outlet-pipe B, open to the atmosphere,leading from the pipe A below the check-valve, and provided with the downwardly-closing puppet-valve b, the weighted lever D, loading said outletvalve b, the motor-cylinder E, receiving iiuid under pressure from a point beyond the checkvalve, and the motor plunger or piston F, acting on said lever to lift it and open the outletvalve b, substantially as herein described.

Fnnnx. HivNns, HENRY J. MoBRIDn. 

